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FMP (version 1.4)

Filtered Monotonic Polynomial IRT Models

Description

Estimates Filtered Monotonic Polynomial IRT Models as described by Liang and Browne (2015) .

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Version

Install

install.packages('FMP')

Monthly Downloads

158

Version

1.4

License

GPL (>= 2)

Maintainer

Niels G Waller

Last Published

February 9th, 2016

Functions in FMP (1.4)

gen4PMData

Generate item response data for 1, 2, 3, or 4-parameter IRT models
FMP

Estimate the coefficients of a filtered monotonic polynomial IRT model
FMPMonotonicityCheck

Utility function for checking FMP monotonicity
erf

Utility fnc to compute the components for an empirical response function
restScore

Plot an ERF using rest scores
genFMPData

Generate item response data for a filtered monotonic polynomial IRT model
svdNorm

Compute theta surrogates via normalized SVD scores
FUP

Estimate the coefficients of a filtered unconstrained polynomial IRT model
eap

Compute eap trait estimates for FMP and FUP models
irf

Plot item response functions for polynomial IRT models.